Art Gallery Space Expansion Sketches

I've drawn up some sketches of an expansion plan to The 5th Street Gallery, which is set up in the Historic Federal Building. It would incorporate parts of the old Post Office lobby that was the access to the mail boxes. It would mean either acquiring or building portable, collapsible walls, seven that would be freestanding except for attachment to one side at the pilasters, and seven that would cover the old post office box walls, making that area usable for exhibition. The usable space would be approximately 1,900 square feet total. The space is also quite well lit during the day by the high ceiling, but some sort of lighting will have to be introduced for any presentation in the evening.